Clutch for paper-spools.



W. SHEAHAN. CLUTCH FOR PAPER SPOOLS. APPLICATION FILED APB. 22, 1911.

1,1 10,651 Patented S ept. 15,1914.

2 SHEETSfiHEET 2.

IN VE/V TOR WITNESSES. Q WLZZLctZn Sheczhdfl MM 6 v ATTORNEY IIL NORRISPETERS 60.. PHOTO-LITHO ASH! UNITED STATES PATENT OFFICE.

WILLIAM SHEAHAN, OF OREGON CITY, OREGON.

CLUTCH FOR IPAPER-SPOOLS.

To all whOm it may concern Be it known that I, WILLIAM SHEAHAN, acitizen of the United States, and a resident of Oregon City, Clackamascounty, State of Oregon, have invented a new and useful Improvement inClutches for Paper-Spools, of which the following is a specification.

This application being intended as a substitute for my prior applicationfiled December 31, 1910, Serial No. 600,350.

This invention relates primarily to de vices for clamping the spool of aroll of pa-' per on the shaft on which it is mounted. As well known,such spools are commonly made of wood, iron or paper, but the latter ispreferred for its cheapness of manufacture, and saving of freight intransportation, because of its greater lightness. The devices used forclamping the spool on the shaft, however, impose upon it undue wear. Inthis connection my invention has for its object to provide clampingmeans which will not impose undue wear on a paper spool; and,furthermore, will insure that the spool will run true. The particularfeatures of my invention, with regard to its use for either purpose,will be taken up in detail in the body of this specification.

In the drawings:

Figure 1 is a sectional elevation illustrating my invention aspractically applied for clamping the paper spool on the shaft, thedevice being shown as appearing before the Wedges are expanded to clampthe spool; Fig. 2 shows an assembly of all the devices comprised withinmy invention, with parts broken away and parts in section; Fig. 3 is. atransverse sectional detail of one of the wedges of my device, thesection being taken on the plane of the arrow A in Fig. 1; and thisfigure illustrates the means provided for automatically locking theouter end of one of the wedges with the nut for the purpose explained inthe body of the specification; Fig. 4 is a cross section approximatelytaken on a line BB of Fig. 1; and Fig. 5 is a perspective detail of oneof the segmental wedges.

The shaft, a, is understood to be rotatably jo-urnaled at its ends insuitable boxing, not shown. It is formed with a flat face 5, so as torestrain the member mounted thereon against rotation. Longitudinallyslidable on the shaft, a, is mounted a sleeve 0, of uniform diameter atone end (cl'), which end is provided with a peripheral thread 6, and theSpecification of Letters Patent.

Application filed April 22, 1911.

Patented Sept.15, 1914.

Serial N 0. 622,826.

opposite end f is formed with a series of peripheral conical steps. Theeye of the sleeve 0 conforms to the peripheral contour of the shaft a,so that it will not rotate on the latter. On the threaded end of thesleeve 0 is mounted a nut h, made with a peripheral flange 6, providedon the interior with a rib g is the spool preferably made of paper, forreasons stated. Within the spool g are inserted a series of segmentalwedges 2, provided on their inner faces with bevel steps 7),corresponding With the conical surfaces f of the sleeve 0, asillustrated in Fig. 1. While the drawing shows four Wedges being used,the number of the latter is immaterial, since a greater or lesser numberwould answer just as well if the other parts of my device arecorrespondingly arranged. The peripheral conical surfaces of the sleeve0 and the related surfaces of the segmental wedges 10 must be made inshort steps having a steepinclination, in order that the lineardisplacement, resulting from a short longitudinal movement of 'thesleeve and segmental wedges against each other, will cause an almostfull expansion of my clutch. The wedges p are made at their outer endswith a flange 39 formed with a circumferential groove 1, correspondingto the inner rib j of the flange z of the nut h. In order that my devicewill work properly,it is necessary that the cone-faced exterior of thesleeve 0 and the outer and inner faces of the wedge 39 are accuratelymade, so that the outer faces of the wedge segments will represent atrue circle throughout their lengths while climbing and resting on thecone-faced exterior of the sleeve 0. I prefer to construct the conefacedexterior of the sleeve and the beveledfaced exterior of the wedges p insteps, as shown in Fig. 1, so as to obtain a steeper inclination, andthereby obtain a quicker expansion action.

The flange of the nut h is provided with a lock pin It", formed with abent head and with a Web t, adapted to be inserted in a cavity a,provided in the flange 11 of the nut it. The lower end of the lock pinis is threaded and has mounted on it a collar Z, on which is seated thelower end of a coilspring m, operating to normally project the lock pin70 into thecavity s of the groove 1' of the flange-head p of the wedgesp.

The purposes of the devices last described is to take care of anoccasion when the clutch has not been setup sufficiently tight, for

under such circumstances the segmental a that between the inner faces'ofthe latter and the cone-faced exterior of the sleeve 0. If this shouldhappen, the lock pin Z of-the nut it would enter the cavity 8 of asegmental wedge and by thus locking such parts together the rotation ofthe seg- V mental wedges will rotate the nut on the thread of the sleeve0 and draw up the latter sufficiently to cause the wedges to be properlyexpanded and clamp the spool.

. The providing of a cavity 8 in one of the wedges is however, merelyillustrative of means for connecting the nut h and the segmental wedgesfor the purpose explained. The lockrpin 70 may also be projected betweent'woadjacent segmental wedges. If

the with should be moved to the inner end of the thread on the sleeve 0without having accomplished the full expansion of the segmental wedges,then the lock-pin, 7 sleeve longitudinally slidable on said shaft; theshaft and the core of said sleeve made having engaged with one wedge, orbeing projected between two wedges, will hold the wedges againstrotation on the sleeve, and the frictional contact between the outerfaces of the wedges and the core of the spool will I generally besuflicient to hold the clutch against rotation in the spool. Thelock-pin is may be released by merely lifting it against the tension ofthe coil-spring m, and so arranging it that the web t will be I seatedcrosswise of,'instead of in, the cavity u. lVhile both the sleeve 0 andthe wedge segments 79 move relatively, yet by reason of thegreaterfriction being between the outer faces of the segmental. wedgesand the spool 1 g, thefsleeve 0 does all thetraveling to and fro on theshaft or, during the operation of clamping and releasing the spool.

In order to limit the longitudinal-play of the sleeve 0 and the spoolthereon clamped on the shaft a, I use a set collar as o, shown to allconditions.

in Fig. 2, at one end, and a set collar to at the opposite end, thelatter provided with an arm 00, adjustable by a set screw y, since it ismy obj set to make my device adaptable To facilitate the rotation of-thenut h, it is provided with spanner holes a. i v

' One of the particular advantages of my device is thatthe segmentalwedges are expanded equally, and there is no danger of tearing thesurface of the core of the spool, as there is no torsional movement.

. I claim:

1. The combination with a shaft, of a nonrotatable sleevelongitudinallyfslidable on said shaft; one end of said sleeve providedwith a peripheral thread and the opposite end being made cone-faced; anut 'on the threaded end of the sleeve; segmental wedges each formedbevelfaced on the in- I with a peripheralthreadand the opposite endbeing made cone-faced; a nut on the threaded end of the sleeve;segmental wedges each formed bevel faced on the interior whereby it isadapted to ride on the cone faced exterior of said sleeve; means forengaging the outer ends of said Wedges gaging said nut with said wedges,when by reason of looseness the latter rotate on the sleeve with thespool; and means limiting the longitudinal movement. of the sleeve ontheshaft. 1

s. The combination with a shaft, of a 'with engaging faces preventingthe latter rotating on the shaft; one end of said sleeve provided with aperipheral thread and the opposite end being made with a series ofthreaded end of the sleeve; segmental wedges each formed with a seriesof bevel faced portions on the interior: whereby it is adapted to rideon the cone faced exterior with the nut; means for automaticallyenperipheral conical steps; a nut on the of said sleeve; said wedgesformed with a peripheral flange at the] outer ends and whereby they areengaged with the flange of said nut; means for automatically engagingsaid nut with said wedges, when by reason of lo-oseness the latterrotate on 1 the sleeve with the spool; andmeans limiting thelongitudinal movement of the sleeve on the shaft.

l. The combination with a shaft, .of a

sleeve longitudinally slidable on said shaft;

the shaft and the core'of said sleeve made with engaging facespreventing the latter rotating on the shaft; one end of said sleeveprovided with a peripheral thread and the opposite end being made with aseries of peripheral conical steps; a' nut on the threaded end of thesleeve; segmental wedges each formed with a series of bevel facedportions on the interior whereby it is adapted to ride on the cone facedexterior of said sleeve;

said wedges formed with a peripheral flange at the outer ends andwhereby they are engaged with the flange of said nut; said-peripheralflange of the'nut being provided with a spring-controlled lock pin andthe outer flange of one of said wedges being opposite end being madewith a series of peripheral conical steps; a nut on the threaded end ofthe sleeve; segmental wedges each formed bevel faced on the interiorwhereby it is adapted to ride on the cone faced e2;- terior of saidsleeve; said wedges formed with a peripheral flange at the outer endsand whereby they are engaged with the flange of said nut; saidperipheral flange of the nut being provided with a springcontrolled lockpin and the outer flange of one of said wedges belng provided with arelated cavity for the purpose set forth; and means limiting thelongitudinal movement of the sleeve on the shaft.

6. In a clutch, the combination of a sleeve; one end of said sleeveprovided with a peripheral thread and the opposite end being made with aseries of peripheral conical steps; a nut on the threaded end of thesleeve; segmental wedges each formed bevel faced on the interior wherebyit is adapted to ride on the cone faced exterior of said sleeve; saidwedges formed with a peripheral flange at the outer ends and wherebythey are engaged with the flange of said nut; and means forautomatically engaging said nut with said wed 'es, when by reason oflooseness the latter rotate on the sleeve with the spool.

7. In a clutch, the combination of a sleeve; one end. of said sleeveprovided with a peripheral thread and the opposite'end being made with aseries of peripheral conical steps; a nut on the threaded end of thesleeve; segmental wedges each formed with a series of bevel facedportions on the interior whereby it is adapted to ride on the cone facedexterior of said sleeve; said wedges formed with a peripheral flange atthe outer ends and whereby they are engaged with the flange of said nut;and said peripheral flange of the nut being provided with aspring-controlled lock pin and the outer flange of one of said wedgesbeing provided with a related cavity for the pun pose set forth. Q 8. Ina clutch of the class described, the combination of a sleeve adapted tobe mounted on a shaft, said sleeve formed with an exterior conicalperiphery; a wedge element formed with an interior conical peripherywhereby it is adapted to ride on said conical surfaces of said sleeve;means for moving said sleeve and said wedge element longitudinally oneach other; and means for engaging said wedge element with said meansfor automatically effecting said longitudinal movement when a rollsupported by the clutch becomes loose.

9. In a clutch of the class desoribed,'the combination of a sleeveadapted to be mounted on a shaft, said sleeve formed with an exteriorconical periphery; a segmental wedge formed with an interior conicalperiphery whereby it is adapted to ride on said conical suriaces of saidsleeve; means for moving said sleeve and said segmental wedgelongitudinally on each other; and means for engaging said segmentalwedge with said means for automatically effecting saidlongitudinalmovement when a roll supported by the clutch becomes loose.

10. In a clutch of the class described, the combination of a sleeveadapted to be mounted on a shaft, said sleeve formed with a series ofperipheral conical surfaces arranged in short steps of steepinclination; a wedge element formed with a series of interior peripheralconical steps arranged relatively to said peripheral surface of thesleeve; means for moving said sleeve and said wedge elementlongitudinally on each other; and means for engaging said wedge elementwith said means for automatically effecting said longitudinal movementwhen a roll supported on the clutch becomes loose.

11. In a clutch, the combination of a sleeve adapted to be mounted on ashaft, said sleeve formed with a series of peripheral conical surfacesarranged in short steps of steep inclination; a segmental wedge formedwith a series of interior peripheral conical steps arranged relativelyto said peripheral surface of the sleeve; means for relatively movingsaid sleeve and said segmental wedge longitudinally on each other; andmeans for automatically engaging said segmental wedge with said meansfor effecting said longitudinal movement when by reason of looseness thesegmental wedge rotates on the shaft and to thereby actuate said movingmeans.

' 12. In a clutch, the combination of a sleeve adapted to be mounted ona shaft, means preventingthe rotation of the sleeve on the shaft, saidsleeve formed with a series of peripheral conical surfaces arranged inshort steps of steep inclination; a wedge element formed with a seriesof interior peripheral conical steps arranged relatively to saidperipheral surface of the sleeve; means for relatively moving saidsleeve and said wedge element longitudinally on each other; and meansfor automatically engaging said segmental wedge with said means forefiecting said longitudinal movement when by reason of looseness thesegmental wedge rotates on the shaft and to thereby actuate said movingmeans.

loo

iis

13-. In a clutch of theclass described, the combination of a sleeveadapted to be mount. ed on a shaft and provided; with a periphericalconical wedge shape surface, a wedge 7 element formed withan-inter1orwedge surface arranged relatively to the wedge sur-I face onthe sleeve and cooperating therewith to create abinding action tolock'the wedge element and the sleeve together, means for holding thewedge surfaces of the wedge element and the sleeve in binding relation,

threads to force the wedge element inwardly V to cause the wedgesurfaces to engage and means between the aforesaid means and the wedgeelement to cause rotation of the first mentioned means to automaticallymove the wedge element to' bind against a roll supported thereon whenthe latter becomes loose. t

15. In a clutch of the class described, the combination of anon-rotatable sleeve adapted to be mounted on a shaft and provided witha peripherical conical wedge shape surface, a wedge element formed withan in -terior wedge surface arranged relatively to the wedge surface ofthe sleeve and cooperatingtherewith,means engaging the sleeve to operatesame, said means having a part which 'lies adjacent the wedge element,and an interlocking device carried by said part and adapted to engagethe wedge-element to automatically take up wear of a roll sup-1 portedby the clutch.

' 16; In a clutch of the character described, the combination of asleeve adapted to be mounted'on a shaft andprovided with a plurality ofwedge surfaces, a series of segmental plates formed with a plurality ofwedge shape surfaces which cooperate with the wedge surfaces on thesleeve, and means automatically operated when a roll support ed by theclutch becomes loose to create relative movenient betweenthe sleeve andthe segmental'plates to cause the cooperating wedge surfaces to forcethe plates outwardly and frictionally engage the roll and take up theloosenessa l J 11in aclutch ofthe class described, the

'con'ibination of a longitudinally movable sleeve formed with aplurality of peripherical wedge surfaces, a series of segmental platesmounted on the sleeve, each plate having a plurality of wedge surfaceswhich en gage with and cooperate with the wedge surfaces on the sleeve,and means automatie cally operated when a roll supported by the 'clutchbecomes loose to longitudinally inove the sleeve to cause thecooperatlngwedge, surfaces to force the segmental plates out the sleeve, each. ofsaid plates having a plurality of steep short inclined surfaces corerespondmg to and cooperating wlth the 1nclincd surfaces on the sleeve,said plates be; mg freely rotatable on the sleeve and each beingind'ependent'and free of the other, and 7 means operable by a rollsupported on the clutch for causing rotation of the plates and creatingrelative longitudinal movement between the sleeveand'plates tofrictionally bind them and a. roll supported by the clutch.

l9."ln aclutch of theclass described, the combination of a sleeve formedwith a plurality of steep short inclined surfaces, a plurality ofsegmental plates freely rotatable on the sleeve, each plate having aplurality of steep short inclined surfaces corresponding to andcooperating with the in-' chned surfaces on the sleeve, and meansoperatingon the sleeve to create relative:

movement between the sleeve and segmental sections to cause the short'steep inclined surfaces to ride one on the other and frictionally bindthe platesand sleeve and a roll supported on the clutch, the segmentalplates rotating independently of the sleeve during the time of therelative movement. 1 V WILLIAM SHEAHAN.

lVitn'esses: 7. Lewis Cox,

Groin Lona Copies of this patent may be obtained for five cents each,b'yaddres sing the Commissioner of Patents, I Washington, D. C." a

